/***********************************************************************
*
*       ELMER, A Computational Fluid Dynamics Program.
*
*       Copyright 1st April 1995 - , Center for Scientific Computing,
*                                    Finland.
*
*       All rights reserved. No part of this program may be used,
*       reproduced or transmitted in any form or by any means
*       without the written permission of CSC.
*
*                Address: Center for Scientific Computing
*                         Tietotie 6, P.O. BOX 405
*                         02101 Espoo, Finland
*                         Tel.     +358 0 457 2001
*                         Telefax: +358 0 457 2302
*                         EMail:   Jari.Jarvinen@csc.fi
************************************************************************/

/***********************************************************************
Program:    ELMER Front 
Module:     ecif_inputIges.h
Language:   C++
Date:       01.10.98
Version:    1.00
Author(s):  Martti Verho
Revisions:  

Abstract:   A base class for input of IGES-format CAD input files. 

************************************************************************/

#ifndef _ECIF_INPUT_IGES 
#define _ECIF_IGES_IGES


#include "ecif_input.h" 


struct IgesStatusField {
public:
  IgesStatusField();
  void setValues(char* data_str);
  int blankFlag;
  int subordFlag;
  int useFlag;
  int hrchFlag;
};


struct IgesDirectoryEntry {
public:
  IgesDirectoryEntry();
  int id;                 // Fld-10
  int entNbr;             // Fld-01
  int startLine;          // Fld-02
  int nofLines;           // Fld-14
  colorIndices colorNbr;  // Fld-13
  int formNbr;            // Fld-15
  int transfId;           // Fld-07
  IgesStatusField status; // Fld-09
  bool canBeBody;         // Flag: can this entry define a body (liked a closed circular arc in 2D)
  int referingId;         // The directory entry id which is using this entry
  Body* body;             // The body this entry defines or belongs to
};


class BodyElelment;
class Model;
class GcPoint;


//*****
class InputIges : public Input
{
public:
  InputIges(enum ecif_modelDimension m_dim,
            ifstream& in_file, char* in_filename);
  ~InputIges() {};
protected:
  bool createNewBody;
  IgesDirectory* directory;
  int paramSecLine;
  int paramSecStart;
  int addToDirectory(IgesDirectoryEntry* dir_entry);
  bool checkEntryReferences();
  bool createBodies();
  bool dataLineStrmIsEmpty(istrstream& data_line);
  enum ecif_modelDimension findCadModelDimension();
  void getDataField(istrstream*& data_line, char* field_buffer);
  IgesDirectoryEntry* getDirectoryEntry(int entry_id);
  void getDirectoryField(int fld_nbr, char* line_buffer, char* fld_buffer);
  void locateParamEntry(IgesDirectoryEntry* de);
  bool read_100(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_102(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_106(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_110(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_126(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_128(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_141(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_142(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_143(IgesDirectoryEntry* de, bool check_only_status = false);
  bool read_144(IgesDirectoryEntry* de, bool check_only_status = false);
  bool readCadGeometry(); 
  bool readCadHeader();
  bool readBodyElements(); 
  int readDirectory();
  IgesDirectoryEntry* readDirectoryEntry(char* first_line);
  void readDataLine(char* line_buf, char* data_buf);
  int readDoubleFields(istrstream*& data_line, int nof_fields, double* buffer);
  int readIntFields(istrstream*& data_line, int nof_fields, int* buffer);
  bool readLine(Body* body); 
  bool readNurbs(Body* body); 
  bool readPoint(istrstream*& data_line, Point3& p);
  BodyElement* readVertex(istrstream*& data_line);
} ; 



#endif